AP1501
150KHz, 3A PWM BUCK DC/DC CONVERTER
General Description
Features
The AP1501 is a fully integrated step-down DC/DC converter,
with the ability to drive 3A load without the need of additional
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Output voltage: 3.3V, 5V, 12V and adjustable output
version
Adjustable version output voltage range, 1.23V to
37V+4%
150KHZ +15% fixed switching frequency
Voltage mode non-synchronous PWM control
Thermal-shutdown and current-limit protection
ON/OFF shutdown control input
Operating voltage can be up to 40V
Output load current: 3A
driver components. The AP1501 operates at
a switching
frequency of 150KHZ enabling the use of small size filter
components. As a result, board space is reduced and BOM costs
are lowered.
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The AP1501 has integrated the shutdown function that allows
standby mode to be activated via an external logic signal input.
The internal compensation facilitates feedback control for line
and load regulation without the need of an external circuitry. The
AP1501 has a built-in Thermal shutdown and Current Limit
function to prevent damage from high operating temperature and
high current operating to the output switch.
Low power standby mode
Built-in switching transistor on chip
Lead Free packages: TO263-5L and TO220-5L(R)
TO263-5L and TO220-5L(R): Available in “Green”
Molding Compound (No Br, Sb)
Additional features include a guaranteed +/- 4% tolerance on the
output voltage under specified input and output load conditions,
and +/- 15% on oscillator frequency. The AP1501 offers both
fixed and a Adjustable output voltages. For fixed outputs the
AP1501 supports 3.3V, 5.0V and 12V. The package options
available are standard 5-lead TO263 and TO220(R) packages.
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Lead Free Finish/RoHS Compliant (Note 1)
Applications
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Simple High-efficiency step-down regulator
On-card switching regulators
Positive to negative converter
Ordering Information
AP1501 - XX XXX X - X
Package
Lead Free
Packing
U : Tube
13 : Tape & Reel
Output version
L : Lead Free
G : Green
K5 : TO263-5L
T5 : TO220-5L
Blank : Adjustable
33 : 3.3V
T5R : TO220-5L(R)
50 : 5.0V
12 : 12V
Tube
13” Tape and Reel
Package Packaging
Device
Quantity Part Number
Suffix
Quantity
Part Number
Code
(Note 2)
Suffix
NA
Lead-free
Lead-free
AP1501-XXK5L-U
AP1501-XXK5L-13
AP1501-XXK5G-U
AP1501-XXK5G-13
AP1501-XXT5L-U
AP1501-XXT5G-U
AP1501-XXT5RL-U
AP1501-XXT5RG-U
K5
K5
K5
K5
T5
T5
T5R
T5R
TO263-5L
TO263-5L
TO263-5L
TO263-5L
TO220-5L
TO220-5L
TO220-5L(R)
TO220-5L(R)
50
NA
50
NA
50
50
50
50
-U
NA
-U
NA
-U
-U
-U
-U
NA
800/Tape & Reel
-13
NA
NA
800/Tape & Reel
-13
NA
NA
NA
NA
NA
NA
NA
NA
Lead-free
Lead-free
Notes:
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied, see EU Directive 2002/95/EC Annex Notes.
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf..
AP1501 Rev. 11
1 of 12
JANUARY 2009
www.diodes.com
© Diodes Incorporated
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